Sylvania



Patented Mar. 2|, |899.

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1 u M B L n L A S H H. W

. (Application ledl Jupe 11, 1898.\ (No Model.) y

x n m s R/W O T N E V W WITNESSES:

wf WW No. 62|,34L Patented Mar. 2|, |899. W. H. HLLAR & A. KENNEDY.

SAFE BoLTwunK.

(Application led June 11, 1898.\

Iwo Model.) 3 Sheets-Sheet 2.

FIG.

W|TNESSES INVENTORS,

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VILLIAM H. HOLLAR AND ANTHONY KENNEDY, OF PHILADELPHIA, PENN- SYLVANIA; SAID KENNEDY ASSIGNOR TO SAID HOLLAR.

SAFE-BOLTWORK.

SPECIFICATION forming part of Letters Patent No. 621,341, dated March 21, 1899.

Application iiled .Tune 11,1898. Serial No. 683,165. (No model.)

T0 @ZZ whom t may concern: A represents a metal safe-door plate. It is Be it known that we, WILLIAM H. HOLLAR circular in shape and its edges are beveled so and ANTHONY KENNEDY, of Philadelphia, inv as to admit the tightest possible itintoasimithe State of Pennsylvania, have invented cerlarly-beveled aperture in the safe. Around 55 5 tain new and useful Improvements in Safethe inside of the door-plate are two circular Doors and Bolt Mechanism Therefor, whereof projecting flanges a c, concentric with each the following is a speciiication, reference beother and with the plate. These 'ianges may ing had to the accompanying drawings. either be formed of separate pieces suitably Figure 1 is an interior View of a safe-door fastened or rabbeted to the inner surface of 6oA xo plate embodying our invention and showing the door, or they may, if the door-plate be the arrangement of the boltwork. Fig. 2 is a formed of a casting, be made integral therevertical section of the same. Fig. 3 is a dewith. Through these circular flanges are tail View of parts shown in Fig. 1. Figs. 4 formed bearings in which slide a series of and 5 represent alternative methods of conradially-disposed bolts b, all radiating from 65 i5 necting the central revolving plate B, Fig. l, the common center of the circular flanges. with its actuating mechanism. Fig. 6 is an The bearings may be fitted with cups b' on enlarged view corresponding in section to the side against which the weight of the bolt Fig. 2, but also showing the com-plete conleans, containing a ball or roller bearing. struction of the door. Y Upon the central stud d' there is pivoted a 7o 2o Our invention has for its object to arrange spur-wheel B, surrounding which are mountthe bolt mechanism so that the :resisting ed a series of pinions C, all engaging therepower of the door shall be the same no matter with. The series of pinions correspond to from what direction a strain of separation` the series of bolts, each of which carries upon may come. This we accomplish by radiallyits inner extremity a short rack c, engaging 75 2 5 disposed bolts. The arrangement has the with one of the pinions. In order to make further important advantages that the entire room for the largest possible number of bolts, system of boltwork is perfectly balanced; that the pinions maybe made comparatively small each bolt is actuated by perfectly direct and may be placed as near together as practhrust that the actuating mechanism for each ticable, allowing for the necessary spaces to 8o bolt in the entire system is alike and therebe occupied by the rack-bars which pass before no more energy is required to move one tween them. The spur-wheel B is so mountbolt than any other, resulting in perfect ed as to be capable of but slight rotation, and equalization of all strains -upon the mechanthe extent of its rotation is limited by studs ism, and, lastly, that the actuation of the a2, extending from the back of the door-plate 85 3 5 whole system is dependent upon the very through short circumferential slots b2 formed slight rotation of a single pinion. 'in the Wheel, the length of the slots being de- The radial system of boltwork which forms termined by the extent of the throw which it the subject of our invention is especially apis desired to impart to the bolts. Usually plicable to circular doors, and it is in this conthis is so short that thel Vactually operative 9o 4o nection that we have shown it. It is equally parts of the circumference of the spur-wheel applicable to doors in which the actuation of will be somewhat less than the whole,in which the bolts is effected from the outsideby means case certain teeth of the spur-wheel may be of an arbor passing through the door or to omitted, as shown in Fig. l. The rotation of doors in which the'actuation is wholly autothe spur-wheel B may, if desired, be effected 95 45 matic, depending upon the release of a detent by an arbor passing through the safe-door, or by time mechanism. It is very desirable in it may be effected automatically, as shown the latter class of doors by reason of-its being in the drawings. In this case a slide-bar D so very light-running. (seen more clearly in Fig. 3) is mounted in We will now describe the embodiment of the rear of the spur-wheel andfurnished with roo 5o our invention which we have shown in the a rack engaging with a toothed sector d, fasaccompanying drawings. tened to the back of the spur-wheel. The

throw of this slide-bar is effected by a coiled spring or other appropriate mechanism released by a detent controlled by time mechanism. Its throw gives to the spur-wheel the necessary rotation to draw the bolts. In Fig. l, E represents the time mechanism and F the stationary plate mounted upon the studs (L2, extending through the slots of the spurwheel. This stationary plate is the abutment for the spring or other actuating mechanism of the slide-bar D.

In Figs. 4 and 5 alternative methods are shown by which the throw of the slide-bar D effects the desired rotation of the spur-wheel B. In Fig. 4 the connection is made bya link G, and in Fig. 5 by a lever I'I, operating between the slide-bar and the central base of the spur-wheel.

In operation the slight partial rotation of the spur-wheel B, however effected, causes a similar rotation of all the pinions which in turn impart a simultaneous and equally-distributed direct thrust to each of the bolts by means ofthe racks upon their extremities. Itwill be noticed that as the result of the radial arrangement the total amounts of the upward and downward thrusts of the total series of bolts precisely balance each other. The radial arrangement presents the further advantage, which has been adverted to, that the fastening of the door is equally secure in every direction and at every point.

Of course the strength of the fastening of a safe-door is but the strength of its weakest point, and as the boltwork is ordinarily arranged there is a point at which the resistance of the door is much less than at other points. This is not true in our arrangement where the resistance is perfectly evenly dis tributed around the entire door. To these advantages the simplicity and beauty of the construction must be added.

In Fig. Gwe have shown the combination ol our boltwork with a cast-metal backing for the door of the safe, whereby we are able at l the same time to obtain by means of a single simple casting both a housing for the boltwork and a hollow space for the retention of a suitable filling between the outer face of the door and the boltwork. In said figure A represents a single circularcastinghaving formed upon its inner face the concentric anges which carry our boltwork. The outer surface of this casting is formed with a large peripheral flange and central depression. Against this outer surface is fitted a second plate A2 to form the outside or front face of the door, which may be of armor-plate or other highlyresisting steel.

Having thus described our invention, we claim- 1. The bolt mechanism for safe-doors consisting of the combination of a centrally-disposed spur-wheel; a series of pinions surrounding the spur-wheel and engaging therewith; and a series of radially-disposed bolts carrying rack-bars upon their inner extremities which engage each with one of the pinions, whereby a simultaneous and similaroperation of each bolt is effected by the partial rotation of the spur-wheel, substantially as described.

2. The bolt mechanism for safe-doors consisting of the combination of the centrally-disposed spur-wheel; one or more circumferential slots therein through which pass pins affixed to the door of the safe; a series of pinions surrounding the spur-wheel and engaging therewith; and a series of radially-disposed bolts carrying rack-bars upon their inner extremities which engage each with one of the pinions, whereby a simultaneous and similar operation of each bolt is effected by the partial rotation of the spurwheel within the limits allowed by the circumferential slots therein, substantially as described.

3. The bolt mechanism for safe-doors which consists in two concentric circular flanges upon the interior of a safe-door; a series of radially-disposed bolts working in bearings in said iianges; rack-bars upon the inner eX- tremities of each bolt; pinions engaging each of said rack-bars; and a centrally-disposed spur-wheel engaging all of the pinions, substantially as described.

4C. rIhe bolt mechanism for safe-doors which consists of a cast-iron backing therefor having cast integrally with itself two or more concentric circular flanges; a series of radial1ydisposed bolts working in bearings in said dan ges; rack-bars upon the inner extremities of said bolts; pinions engaging each of said rack-bars; and a centrally disposed spurwheel engaging allot the pinions, substan? tially as described.

WM. H. HOLLAR. ANTHONY KENNEDY. Witnesses:

J AMES H. BELL, RANDOLPH SATLER. 

